Tire-fabric-stripping machine



a a a on 54 Jl me 30, 1925.

1,543,944 E. E. MITCHELL TIRE FABRIC STRIPPING MACHINE Filed Feb. 28, 1924 SSheecs-Sheei 1 June '30, 1925.

E. E. METCHELL TIRE FABRIC STRIPPING MACHINE Filed Feb. 28, 1924 .5 Sheefs-Sheei 2 5. E. MITCHELL TIRE FABRIC. STRIPPING MAGH-IYNE June 30, 1925.-

Fglewweb. 28, 1924 s sheetssheet s i Q Ana is RAE/NWT 3.3. F DETRDTIF, MECWGAN.

. TIBEFAliEIC-STBZPPING application filed February 28, 1924. i erial 55o. $35352.

whom may comers.

anown that l, Eanussr E. li-ilirorrnnn, n. of the United States, residing at the county of Wayne and State an. have invented certain new and rovemcnts in Tire-Fabric-Stripines, of which the following is a .on, reference being had therein is accompanying drawings.

inven'rion relates to a fabric machine and my invention aims from worn, injured or disso that pieces of the fabric may patches for repairing punctures .rwise injured outer Lire casings or inner tubes. "fl; is in this connection that an tire casing cannot be properly patched of fabric other than of the character in "the hire casing, and my invention is adapted for recovering cord fabric from what commonly styled cord tires, such tires having cord fabric embedded in vulaniiacd rub On account of the nature ed rubber the cord fahric canvenienily cut from the vulcanized cad portion of an outer tire but J found chat the fabric may he stripped l crlre l away from {he ruhher so that it ively clean and such condition to he conveniently used for patching purher".

'tiou aims to provide a machine i. feed rolls between which a piece nai'ziet ied ouier casing is fed and operated upon by a shearing" or spreading instrumentality which causes the fabric to be separated from the vulcanized rubber trend of the cas inn. The shearing or spreading instrumeniality is reciprocaced as an outer casing is against rhe insirumentality by the feed rolls. and provision is made for hringring suhicieni pressure to hear on an outer casin-g to cause it to he positively fed against spreading instrumenfr li'ty. The machine may operated at various speeds and is adap i'o expeditiously and economically recover fabric from an outer tire casing.

The construction of the machine will he "reinafter specifically described and i'heu m and reference will now he hao "to drawings. whereinl igure 1 is a front elevation of rho ma- Ale a machine by which fabric may Fig. 3 is a. plan of a detached shearing or spreading instrumeniiality;

F g. 4 is a front elevation of the same; Fig. 5 is an enlarged vertical sectional view of the machine; is

Fig. 6 is an enlarged front elevation of a portion of. the same;

Fig. 7 is across sectional View of the curler casing of a tire showing places where the clencher flanges of the casing are removed, and l Fig. 8 is a cross sectional view of a. portion of the outer casing which has been flattened and a strip of fabric removed therefrom.

The machine comprises side frames 1 and Bill Journaled in the hearings 5 is a transverse shaft 8 and mounted on said shaft is an upper feed r0119 having its periphery provided with a multiplicity of pins 10 or projections that'will extend into the vulcanized tread 11 of a flattened outer casing fed under said roll. In order that the casing may be a started under the roll provision is made for raising the roll. Engaging the hearings 5 are vertically disposed side arms 11 and these side arms have the lower ends thereof connected to cranks 12 on a rock shaft 13 'journaled in the side frames 1 and 2, sai.d rock shaft having a treadle 14 so that foot pressure, by an operator atthe rear side of. the machine, may raise the bearings 5 and the upper feed roll 9. M

. Journaled in the side frames 1 and 2- is another transverse shaft 15 and mounted on this shaft is a lower feed roll 16'having its periphery provided with longitudinally disposed saw teeth 17 or such serrations as will engage an outer casing and cause it to be fed forward between the rolls.

The shafts 8 and 15'. adjacent the side frame 1. are provided with large gear wheels 18 and 19 resnectively, and these gear wheels mesh with small intermeshing gear Wheels 20 supported by arms 1 from the shafts 8 and 15, the arms 21 being connected by a link member which serves as a. shield or guard for the small gear Wheels 20 lid and at the same time retains these small gear wheels constantly in mesh, particularly when the upper feed roll 9 is raised relative to the lower feed roll 16. ln other words, there is always a driving relation estalr lished hetweensaid rolls with said rolls revolving in a clockwise direction to feed an outer casing from the rear side of the maehinet-o the front side thereof.

Meshing with the large gear wheel 19 is asmall gear wheel 20on a transverse shalt 21 journaled in the frames 1' and 2,,said shaft having an end thereof provided with a worm wheel 22 meshing with a worm 2?, on a shaft 24 iournaled in hearings 25, carried hy the side frame 1. ()n the shaft, 24 is av stepped pulley 26 for a helt 27 trained over a stepped pulley 28 on a power shaft 29, said shaft heing journaled in hearings 30, carried by the side frame l. The power shaft 29 has a pullev 31 so that it may he operated from a suitahle source of power; or sald shaft. may he coupled direct to a motor. The belt 27 can he ehanged to provide different speeds of operation for the machine.

The side frames 1 and 2 have transversely alining openings 32 and &3 and slidahle in these openings are the ends of transverse bars 34 and The transverse har 35 is provided Withpests fltiextending into the transverse bar 34 and on said posts are coiled expansion springs 36 which hold the hars 34 and 35 normally separated, hut permit of the bar 35 being raised towards the bar 34. 1 i

.l'ournaled in the side frames 1 and 2, below the bar 35 is a cam shaft 3 and slidahle on said cam shaft, against: the frames 1 and 2 and engaging under the har 35 are angle hra'ekets 39 normally engaged hy earns 40 on the cam shaft 38. One end of the camshaft 38 has a lever 41 extending to the rear side of the machineso that it; may be manipulated for rocking the can: shaft to adjust the cams A and raise the har 35 relative to the bar 34. A lever 41 has a conventional form of hall locking device 42 opcratahle relative to a rack 43 earried hy the side frame 2.

ttached to the middle portion of the hat 35 is a pitman 4"} connected to the wrist pin 4501 a wheel 46 mounted on the forward end of the outershaft'. 29 and it is hy virtue of this wheel and pitnian that the hars 34 and 35 will he reci 'n'oeated. lhe hars 5-34 and 35 slide in the o 'ienings IlQand 3?, with the bar 35 sliding on the angle hraeltets 39 and to hold the har on said angle hraelrets, against accidental vertical displaeement, are set screws 47 whieh engage the upper surface of the har The set screws 47 are. zarried hy the forward ends of arms 48 in guides 49, carried hy the inner fares ol the frames 1 and 2, and said arms extend at 50 hy the frames 1 and These rearwardly and are pivotally supported, as tiilllk; may he provided with studs '5] serving as guides for the upper ends of the side arms 11. The arms 48 are loose in the guides 4t) and do not interfere with a cam adjustment of the har 35 towards the har 34, su h ljustinent heing very small, as will hereinafter appear.

A'l ounted on the her 35 is a holder 5t and mounted in said holder are a plurality of slotted supports for a hlade. 53 which has its lower t'aee provided with an angle har 54 connected to the holder 51 by adjusting rods 55, these rods permitting of the hlade 52} heing shifted in the slotted supports 52 relative to the holder 51. 1 The hlade 5 has its upper l'a 'e provided with a detleetan' 5t; which also serves as a reinforcen'ientfor said hlade and tends to separate fahrio from a tread of an outer casin The edge of the hla'de has a series of blunt teeth 57, which do not artually cut hut have a ripping, I

frames '1 and 2 and extending into the pass hetween the rolls 9 and it Reference will now he had to F igs. 7 and. 8 showing a portion of the outer easing of a tire;

then the segments flattened out, either hefore feeding the same. into the maehine or the flattening out may he aeeomplished on the platform 55%. tefore starting a flattened ,casing strip het ween the feed rolls 5) and 16; the end of the strip is a so as to separate the l'ahrie (if) from the tread ll. Th feed roll 9 is th n rais d and the strip placed l)('l\'\'l.('n said rolls with th tread ll {intending on to the separating ineniher Fi l and the l'ahrir: 30 ext nding under the hlade The feed roll 9 is then lowered hy releasing the treadle ll and pins or projertions l of the feed roll will engage in the tread ll, While teeth I? of the feed roll it] will engage in the lower side of the l'ahrie (it). lhe machine heing plaeed in operation. the strip will be fed hetvJeen the feed rolls 9 and id and the hlade 5 will he rapidly reeiproeatcd so as to separatithe fahrir it! from the tread ll. 'lhe hlad fill \\(H'l{.-; itswvay through the ruhlwr hinfllng the fahrie to the tread and this operation is continued until the strip of rainy" has had the fahrie removed there from.

Slur-e all tire casings may not he alike provision has heen made for adjusting the t ripping instrnmentality relative to the feed rolls, it is hy virtue of the cams 40 that the reciprocating bar 35 is raised to eorreetly position the blade 53 relative to the The eleneher edges or piece 539 are renamed, the easing cut into segm nts and Hit lower iced roll It so that desired thicknesses ot' l'abritmay be stripped from the casing. It is through the medium of the adjusting rods 55 that the blade 57 may be 5 shifted into and out, of the pass between the feed rolls and it is through the medium of such adjustn'lent that different kinds of *fabric may be stripped from an out-er casing or carcass of any tire.

It is thought that the operation and utility of my invention Willbe apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention it is to be understood that the structural elements are susceptible to such variationsand modifications as fall within the scope otthe appended claims.

'hat I claim is:-

1. Means for recovering fabric from outer tire casings, comprising a reciprocatory stripping instrumentalit v, feed rolls for forcing a piece of casing against said stripping instrumentality, and means adapted for simultaneousl revolving said rolls and reeiproeatingsaid strippinginstrumentality.

A machine of the type deseribed, c0mprising an upper feed roll provided with pins, a lower feed roll provided With teeth and cooperating with said upper feed roll in forming a pass through which may be fed an outer casing, means for simultaneously revolving said rolls, means for utlJllStlllQ the'upper roll relative to the lower roll. and a reciprocating instrumeir 'tahty driven in unison with said rolls and ad iusiahly supported in said pass so that said rolls may force an outer easingafiainst 2titi instrumentality to separate parts of saidrasiugzt. Q\ machine as called for in claim 2, whereinsaid recipro ating insrumeutality is in the form of bars. one of which is adjusta le relative to the other and a blade adjustably supported by the adjustable bar.

4. machine of the type described comprising: side frames, upper and lower teed rolls rotatable between said frames, means carried by said frames adapted for raising the upper l'eed roll' relative to the lower feed roll. upper and lower bars slidable in said frames, a separating instrumentality supported by the lowermost bar in proximity to the pass between said feed rolls, and means operated from said roll operatin; means for reciprocating said bars.

In testimony whereof I affix my signature in presence of two Witnesses.

EARNEST E. MITCHELL.

\Vitnesses KARL H. BUTLER, ANNA M. Donn. 

